Furnace for steam-boilers



OFFICE.

DANIEL CARPENTER, OF COI-ICES, NEW YORK.

FURNACE FOR STEAM-BOILERS.

Specification of Letters Patent No. 5,621, dated June 6, 1848.

To all whom '25 may concern:

Be it known that I, DANIEL CARPENTER, of Cohoes, in the county of Albanyand State of New York, have invented a new and useful Improvement inSetting Steam- Boilers, and that the following is a full, clear, andeXact description of the principle or character which distinguishes itfrom all other things before known and of the manner of making,constructing, and using the same, reference being had to theaccompanying drawings, making part of this specication, in which- Figurel is a vertical longitudinalsection through the tlues of the setting,the boiler itself being drawn entire.

The attempts heretofore made to form flues under steam boilers, wherethe products from the fire are caused to revolve and mix withatmospheric air to aid in their more perfect combustion, have been onlypartially successful, in consequence of their not causing' the flame toimpinge directly on the boiler; by my arrangement I effect this objectand entirely overcome the diiiiculty before existing.

The construction is as follows: I place the fire grate (a) in the usualposition under the front end of the boiler, and from thence pass thesmoke &c. back into a chamber (b) at the back of which a wall orpartition (c) is built up close against the bottom of the boiler so asto prevent the passage of any gas between them; there is an opening (d)at the bot-tom of this partition under which the smoke passes, and thenascends a vertical flue (e) formed between the above named partition (c)and another (f.) directly behind it, which latter partition eX- tendsdown to the floor of the furnace; there it is made hollow at (71.) witha set of holes opening into the flue through which atmospheric air isforced that meets the heated gases as they pass under the partition,mingles with them, and aids in their combustion. The flame causedthereby ascends vertically and impinges directly against the boiler, bywhich its heat is imparted, and thence it passes into, a second chamber(i) having a similar partition (7c) to the one (c) already described,and behind it a flue (Z) and partition from the bot-tom of which lattera second injection of air is made to mingle with the verticallyascending current, a still further consumption of the combustible matteris affected, and the body of the flame is made to impinge directly onthe boiler. This may be continued through a succession of any number ofchambers and flues the whole length of the boiler.

What I claim as my invention and desire to secure by Letters Patent is-The series of upright lues and chambers, in which the gases revolve andare consumed, the partitions between said chambers and the upright orascending flues being built up in Contact with the bottom of the boiler,so that no gas can pass between them.

DANIEL CARPENTER.

Witnesses:

H EZEKIAH HowE, JOHN P. STEINBERGH.

